Conciseness

The ~30-line body is lean and efficient: it names the surfaces, gives a 6-step workflow, an output checklist, and links, with zero explanation of concepts Claude already knows and no padding. Every section (Usage, Workflow, Output, Related Skills) earns its place, matching the 'Lean and efficient; every token earns its place' anchor.

Actionability

Concrete guidance throughout: it enumerates the exact Zoom surfaces to choose from, names the seven classification categories, defines a specific ambiguity rule ('ask one short clarifier before locking the recommendation'), and specifies the output shape. It falls short of 5 because the actual decision criteria mapping each category to a surface (e.g. embedded meetings → Meeting SDK, custom video → Video SDK) are not provided, leaving the core judgment to the model's own Zoom knowledge.

Workflow Clarity

The six steps are clearly sequenced with an explicit validation checkpoint ('If the request is ambiguous, ask one short clarifier before locking the recommendation') and step 5's 'explain why the rejected alternatives are worse' acts as a self-check on the recommendation. This is a non-destructive advisory skill under 50 lines where the simple-skill guidance applies, and no validation gap remains relevant to the task.

Progressive Disclosure

The skill is under 50 lines with no need for reference files, and its four sections are well organized; per the simple-skill guidance this warrants a 5. The outbound links ([README.md](../../README.md), ../start/SKILL.md, ../choose-zoom-approach/SKILL.md) are clearly signaled, one level deep, and none of the content that belongs inline is pushed out.

Specificity

The description is only 'Use when choosing products.' — no concrete actions and not even the domain (Zoom) is named, matching the anchor 'Entirely vague; no concrete actions; pure abstract language'. It cannot score 2 because that anchor requires naming the domain, which this description omits entirely.

Completeness

Only a 'when' is present ('Use when choosing products') with no 'what' — the exact shape of the anchor example 'Use when working with documents'. It is not 3 because there is no clear 'what' anywhere in the description, and not 1 because a 'when' clause does exist, albeit vague.

Trigger Term Quality

'choosing products' is one generic keyword phrase; the natural terms a user would say for this skill ('Zoom', 'REST API', 'webhooks', 'Meeting SDK', 'Video SDK', 'webinar', 'in-meeting app') are all absent. It does not score 1 because a recognizable trigger phrase exists, and not 3 because no domain-relevant keywords are present at all.

Distinctiveness Conflict Risk

'Choosing products' is entirely generic and would collide with virtually any product-selection or vendor-comparison skill, not just Zoom ones. It is not 2 because even a broad domain word (e.g. 'Zoom products') that would create mere overlap risk is missing.